Polaris Definition
pə-lărĭs
noun
A binary Cepheid variable, the brightest star in the constellation Ursa Minor; North Star; Pole Star: magnitude, 1.97: used for navigation, since it is the closest star to the north celestial pole and remains nearly stationary throughout the night.
Webster's New World
Synonyms:
- polestar
- polar-star
- pole-star
- north-star
pronoun
(astronomy) The pole star, a trinary star in the constellation Ursa Minor that currently lies close to the north celestial pole; Alpha (α) Ursae Minoris.
Wiktionary
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